In comparing the three proposed biblical principles of ethics with Kantian ethics, it is evident that both Kant and the biblical principles attempt to achieve many of the same objectives despite having different foundations to ground morality. Kant’s ethic, however, proves to be less plausible when his justification for objective morality, his requirements for moral worth, and his argument that humans possess inherent value are compared with a biblical view of ethics.

Kant departs from the first biblical principle by grounding objective morality in the “good will” that is produced by reason in every rational creature. In accord with the Enlightenment ideals of human autonomy and reason, humans can legislate morality apart from God. Assessing the philosophical merit of Kantian ethics versus the biblical ethic on this point deserves careful attention because both views stand or fall with the ability that their intrinsic “good” has to ground objective morality.

The classic problem that confronts any moral system that claims some absolute standard as the ground of objective morality is the Euthyphro dilemma. This dilemma, which goes back to the time of Plato, questions whether God’s commands could really determine what is good (or “pious”). The dilemma is stated: “Is the pious being loved by the gods because it is pious, or is it pious because it is being loved by the gods?”[1]

Both horns of the dilemma are a challenge to any proposed absolute standard of goodness. For any purported standard of objective morality, one can ask whether that standard merely recognizes goodness (i.e., goodness is external to the standard) or whether that standard determines goodness arbitrarily. Consider first whether the biblical ethic is able to defend that the Christian God is plausibly the ground of objective morality in the face of this challenge. It will not do for objective morality to be arbitrary (if good is merely what God says), and God cannot ground objective morality if there is a standard of morality outside of God (if God simply affirms what is independently good). Fortunately for biblical ethics, there is a third alternative—God Himself is the “Good.” The third alternative is that “God’s own holy and perfectly good nature supplies the absolute standard against which all actions and decisions are measured. God’s moral nature is what Plato called the ‘Good.’ He is the locus and source of moral value.”[2] So God is the Good. God’s will and essentially holy nature are fused such that God only wills that which consistently flows from His nature. God is not an arbitrary “stopping point” for morality’s foundation, as there are “principled reasons to think that God’s existence is necessary and that God functions as the very ground of being.” If God is the “primordial good of unsurpassable value,” then goodness is anchored in an unchanging, personal, and necessarily perfect source.[3] It is reasonable that the ground of objective morality would have these properties; morality seems to be essentially bound up with personhood, and anything that would ground objective morality would have to be unchanging and beyond human opinion.

Although the biblical grounding of objective morality in God’s holy nature appears to survive the Euthyphro dilemma, Kant’s “good will” does not fare as well. Kant may seem to split the horns of the dilemma by claiming that the good will is intrinsically and necessarily good. The problem, however, is that there is no reason why the good will must be good “without qualification” in the way Kant says it is. Louis Pojman raises the problem that the good will itself—the rational faculty that recognizes the CI as the supreme moral principle—could potentially be “put to bad uses.” Although the good will seems to be a good, Pojman insightfully recognizes that it is “not obvious” that the good will is necessarily good or that it is “the only inherently good thing” since a “misguided do-gooder” could act in accordance with what he believes is good and yet carry out what most of us regard as bad actions. Perhaps the good will is a “necessary condition to any morally good action,” but it does not seem to be sufficient.[4]

Ultimately, for Kant, the good will is intimately tied to the principle that it produces—the CI and its requirement of universalizability. The problem is that universalizability is unable to stand as the ultimate moral criterion. For one thing, Kant does not adequately specify parameters for the characteristics of a maxim that is appropriate to universalize as moral law. Aside from the limitation that a maxim must not violate the Principle of Ends, Kant “provides no guide for determining what features must be included in the maxim.” This leaves open the door for morally problematic actions “to be based on a maxim that a person would universalize.”[5] Also, it is highly dubious that reason necessarily produces the same conclusions in all rational beings. For example, one could justifiably will to universalize the maxim that “one should always tell the truth no matter what consequence might come about as a result.” Indeed, Kant believed that reason demands the acceptance of this maxim. Yet many would argue that reason demands the acceptance of the maxim that “one should tell the truth unless doing so would harm others.” It is unclear which maxim is necessitated by reason, and both positions have defenders. This example also highlights the difficulty the CI has in handling moral conflicts.[6]

If, however, God’s unchanging and necessarily good character is the intrinsic “Good,” then there is no concern about disagreements among rational human persons as to what should be universalized—that is, what is good. Only God, out of His necessarily holy nature, stands as the ontological ground of goodness, and conflicting human beliefs are irrelevant to the existence of objective morality. With biblical ethics, the existence of moral values and duties (moral ontology) does not depend upon the conclusions we reach as we try to know what these moral values and duties are (moral epistemology). What happens when two maxims that appear to be legitimately justifiable according to our best human reason disagree with each other? If objective morality is rooted in God, then such a situation is irrelevant to moral ontology.

In addition to providing a better foundation for objective moral values, having a biblical ground of ethics can adequately justify moral duties while the Kantian ground of ethics cannot. Since biblical ethics grounds objective morality in God, God’s commands are justifiably our moral duties because they are derived from His essentially holy nature.[7] Biblical ethics is able to sustain itself as a truly deontological ethical system. On the other hand, although Kant would deny it, significant voices have charged that Kant’s good will is unable to produce true moral duties without appealing to a more subjective consequentialist justification for them. The famous utilitarian ethicist John Stuart Mill, for example, claims that the CI does not avoid seemingly “immoral” actions on purely logical grounds; rather, he says Kant merely shows “that the consequences of their universal adoption would be such as no one would choose to incur.”[8] Mill has a valid point. Some seemingly immoral maxims do not lead to any obvious contradiction if universalized, though we can see that the consequences of universalizing it would be morally bad and may produce a negative result. For example, consider the maxim that “two consenting adults who are not already in a committed relationship should always have sex with each other if they desire to do so.” The universal acceptance of this maxim would not in any way lead to a logical contradiction that would undermine the very practice of the maxim, and it is not obvious that the Principle of Ends is being violated since both individuals are consenting and may well have a legitimate interest in the wellbeing of the other person; however, one can reasonably will that this maxim should not be universalized because of the consequences it would have. Such promiscuity is known to carry a heavy emotional weight for those who engage in it, and it also raises the likelihood of the spread of sexually transmitted diseases. Such behavior also makes it more difficult to form meaningful committed relationships, which one can reasonably argue have significant value. In fact, there are actually “Kantian consequentialists,” such as R. M. Hare[9] and David Cummiskey. Cummiskey argues that Kant’s ethical system “is consistent with and supports a consequentialist normative principle” even though Kant sought a fully deontological ethic.[10] If that is the case, then it is hard to see how Kant’s good will allows for objective moral duties; however, because God Himself is the necessary “Good” and His nature produces moral truth that is essential and binding upon us, moral duties transcend humans, and their existence does not depend upon our own assessment of what actions will probably produce “good” consequences. It is not clear that Kant’s CI is able to account for the full range of objective duties that are binding on us and that it can do this without recourse to subjective human considerations of consequences.

Moreover, the authority and bindingness of moral duties seems to be much stronger and more plausible if the source of these duties is a person rather than something impersonal, such as “reason.” Merely “acting and thinking rationally does not constitute a full explanation of moral belief and practice. Moral obligation carries extra clout and punch, which needs accounting for.”[11] When we fall short of our moral duties, we sense that we are guilty in a sense that goes beyond simply violating a principle of reason. Locating the source of moral authority in an essentially holy personal God better explains the objective guilt that seems to accompany violating one’s moral duty. In view of all these considerations, the biblical ethical principle that the standard and basis of all goodness is found in God is quite plausible, and this fact is highlighted by the apparent problems that Kant’s system has in establishing the good will as the one intrinsic good that grounds objective morality.

Moving to the second principle of biblical ethics, Kant’s insight in agreeing with the biblical principle that moral worth depends on our motives as well as our actions has been noted; however, Kant’s view of moral worth proves to be too narrow when compared to the biblical assessment of moral worth. As Joseph Kotva points out, Kantian ethics and all ethical theories that are based strictly upon “rules or duty” are at a disadvantage in accounting for the biblical recognition that the moral life is more than rules. Kant fails to see that life is a “race” that requires ongoing character development. While Scripture goes beyond virtue ethics, it captures its insights. We are constantly to “run with perseverance the race marked out for us” as we model ourselves after Jesus (Heb 12:1-2). Paul emphasizes the need to develop such virtues as “love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control” (Gal 5:22-23), and he exhorts others to grow in character by following his example as he follows Christ (1 Cor 11:1). While Christian ethics certainly has a strong deontological component, Kotva rightly points out the biblical emphasis on developing virtues and constantly struggling for moral growth in order to become a person of greater character.[12]

The key shortfall of Kant’s view of moral worth is that he does not credit moral worth to a person who grows in character such that she no longer does an action out of rational duty but out of modified and improved inclination. We have seen that Kant is clear that there can be no moral worth involved when an agent is “so sympathetically constituted” that she performs kind acts out of the pure joy of doing them rather than a sense of duty.[13] While biblical ethics would applaud someone of such character who enjoys doing virtuous things, Kant does not recognize such a person as morally praiseworthy. He thus fails to capture the value of moral growth and the fact that one should strive both to “will and act” according to what is good (Phil 2:13). While feeling joy from doing what is good should not be our sole moral motivation, “normal healthy human considerations of self-interest are a perfectly legitimate part of moral motivation.”[14]

Therefore, although Kant is certainly right that duties such as the command to love others should be done regardless of inclination, loving others is something that we ought to work towards wanting to do so that the duty does not have to be against inclination. Finding joy in doing what is good is a mark of moral development and personal character, and the Bible more completely captures this. Such character is exemplified in Jesus, who, though He dreaded it, even found joy in sacrificing Himself on the cross for others (Heb 12:2).

Finally, Kant’s ethic falls short of the third biblical ethical principle in terms of justifying the idea that humans possess value. We have seen that Kant attempts to ground the intrinsic value of humanity in our rationality. Kant argues that pure reason forces us to the conclusion that humans must have value because nothing can be valued without rational beings to do the valuing. In contrast, biblical ethics holds that humans have value in virtue of being made in the “image of God” (Gen. 1:26-27). Human value is based on “the relationship for which we were created” rather than because of any “distinguishing characteristic” that is found in human capabilities.[15] This is attractive; for if human value is rooted in a capacity like reason or rationality, then how can the value of babies or the brain damaged be upheld?[16] The reason that the biblical justification for the value of humans is superior to Kant’s follows from the earlier point that God is a far more credible “stopping point” for objective morality than the good will.

If God truly is the ultimate “Good,” then perhaps human rationality is an instrumental good rather than an intrinsic good. Rather than agreeing with Kant that the “rational nature” of humans is itself sufficient for regarding humans as “ends in themselves,”[17] it may be that rationality functions as an instrumental good in so far as it allows us to have a relationship with the one true source of ultimate value—God Himself. If that is the case, then Kant is correct in valuing rationality but wrong in thinking that it has intrinsic value.

Beyond the automatic implications that locating objective morality in God has for human value, careful consideration of the question of human value by itself reveals that humans, if they are to justify having truly objective value, must justify their value by appealing to something outside of themselves. If humans consider themselves intrinsically valuable merely because they value themselves, then how can David Hume’s is-ought problem be avoided? Just because it is the case that humans tend to ascribe value to their own lives and the lives of other people does not mean that we necessarily ought to do so.

Finally, there is a sort of argument from contingency that points to God as the proper justification for human value and dignity. Kant and many others have claimed that we are the sort of beings who have intrinsic value.[18] But even if Kant were right that our rationality provides a basis for intrinsic human value, this would not negate the fact that God is necessary for us to have value because “relationality and intrinsicality are neither at odds nor mutually exclusive.”[19] If there is no possible world in which beings like us could exist apart from God, then there is no reason in principle why our value could not come from both our relationship to God as well the intrinsic qualities God has given us. Paul Copan argues that morality and value are “necessarily connected” with personhood. Since an essential attribute of God is that He exists necessarily and is the ontological ground of all other persons, morality and value would be impossible without God.[20] Using this logic, it is plausible that the source of intrinsic value can only be found in a necessarily existing person. Thus, in response to Kant’s view that the mere possession of rationality endows all rational creatures with intrinsic value, one must ask on what basis humans persons exist to have rationality. God, if He does exist as Kant himself believed, is the only reason that there is rationality. Even if it were true, as Kant claims, that rationality brings about value, God is the source of rationality. Ultimately, in view of these considerations, the biblical justification for human value appears more plausible and legitimate than Kant’s justification.

CONCLUSION

The three biblical principles of ethics proposed in this paper appear to be eminently plausible when held up to philosophical scrutiny. Because Kant, without grounding morality in God, sought to achieve many of the same goals that these biblical principles accomplish, Kantian ethics serves as an instructive litmus test of the plausibility of biblical ethics. Morality must be objective and universal if it is to avoid the total collapse that relativism ensures. Kant is undoubtedly correct in recognizing this. Furthermore, we have seen that objective morality—to be truly objective—must have a plausible absolute standard of intrinsic value and goodness that grounds it. Biblical ethics provides a philosophically justifiable basis for accomplishing this by identifying God as that source. In contrast, Kant is unable to legitimize the “good will” as being “good without qualification” and able to produce moral principles and binding duties that are defensibly objective and have an ontological basis that is fully independent of humanity. Biblical ethics also legitimizes the attractive conviction that humans really do have intrinsic value. Kant is right to recognize the truth that humans are “objects of respect” and should be “treated as ends,” but he is unable to objectively ground this apparent truth in a justifiable source. God Himself is the ultimate standard of goodness and value, and it is only by way of our relationship with God that we, as creatures made in God’s image, can have intimate connection to the ultimate source of value and can ourselves be endowed with objective value.

John E. Hare, The Moral Gap, 18-19. Hare notes that R. M. Hare is a Kantian who believes he is consistent with Kant in applying act-utilitarianism to Kant’s CI to determine whether an act should be universalized.

Baggett and Walls, God and Cosmos, 176. This quote is in the context of showing a limitation of Erik Wielenberg’s secular approach to ethics, but this particular criticism applies to Kantian ethics as well.

Kant, Foundations, 14. Kant believed happiness must result from moral living for us to press on in the moral life, but our motivation to be moral must be duty and not happiness. See Hare, The Moral Gap, 76-78.